An Entitlement is the bridge that says what a plan actually unlocks inside a product. It records a tier — the level of access purchased — and a limits payload describing the quotas or caps that come with it, such as how much of a feature the tenant may use. Linked to both planId and productId, entitlements let one plan grant access across several products and let products read a consistent, machine-checkable answer to "what is this customer allowed to do?" without each app re-implementing billing logic.
Technical section
Data model, API, and internals — visible to developers.